Population Characteristic (Asthma) vs. Air Quality Indicators (Ozone, Pesticide Use, and Toxic Releases from Facilities):

Asthma data retrieval and visualization 

Ozone data retrieval and visualization

Pesticides data retrieval and visualization 
`Tox. Release` data retrieval and visualization 
Scatterplots 

Linear Regression Analysis

## 
## Call:
## lm(formula = log(Asthma) ~ Ozone, data = bayarea_asthma__tract)
## 
## Residuals:
##      Min       1Q   Median       3Q      Max 
## -2.12970 -0.46059 -0.02519  0.41458  1.79404 
## 
## Coefficients:
##             Estimate Std. Error t value Pr(>|t|)    
## (Intercept)   3.9426     0.1378  28.611   <2e-16 ***
## Ozone        -6.3627     3.8038  -1.673   0.0946 .  
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.6916 on 1578 degrees of freedom
## Multiple R-squared:  0.00177,    Adjusted R-squared:  0.001137 
## F-statistic: 2.798 on 1 and 1578 DF,  p-value: 0.09458

## 
## Call:
## lm(formula = log(Asthma) ~ Pesticides, data = bayarea_asthma__tract)
## 
## Residuals:
##      Min       1Q   Median       3Q      Max 
## -2.11706 -0.46207 -0.02622  0.45160  1.78191 
## 
## Coefficients:
##              Estimate Std. Error t value Pr(>|t|)    
## (Intercept) 3.712e+00  1.750e-02  212.17   <2e-16 ***
## Pesticides  9.876e-05  1.085e-04    0.91    0.363    
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.6921 on 1578 degrees of freedom
## Multiple R-squared:  0.000525,   Adjusted R-squared:  -0.0001084 
## F-statistic: 0.8289 on 1 and 1578 DF,  p-value: 0.3627

## 
## Call:
## lm(formula = log(Asthma) ~ `Tox. Release`, data = bayarea_asthma__tract)
## 
## Residuals:
##      Min       1Q   Median       3Q      Max 
## -3.02998 -0.43918  0.00386  0.45439  1.70049 
## 
## Coefficients:
##                 Estimate Std. Error t value Pr(>|t|)    
## (Intercept)    3.623e+00  2.057e-02 176.150  < 2e-16 ***
## `Tox. Release` 2.135e-04  2.683e-05   7.958 3.31e-15 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.6788 on 1578 degrees of freedom
## Multiple R-squared:  0.03859,    Adjusted R-squared:  0.03798 
## F-statistic: 63.33 on 1 and 1578 DF,  p-value: 3.306e-15

Socioeconomic Factor (Poverty) vs. Environmental Effects Indicators (Groundwater threats, Hazardous Waste, and Solid waste sites/facilities):

Poverty data retrieval and visualization 
`Groundwater Threats` data retrieval and visualization 
`Haz. Waste` data retrieval and visualization 
`Solid Waste` data retrieval and visualization 
Scatterplots

Linear Regression Analysis

## 
## Call:
## lm(formula = log(Poverty) ~ `Groundwater Threats`, data = bayarea_Poverty__tract)
## 
## Residuals:
##      Min       1Q   Median       3Q      Max 
## -2.72906 -0.46085  0.03287  0.49876  1.70105 
## 
## Coefficients:
##                       Estimate Std. Error t value Pr(>|t|)    
## (Intercept)           2.696162   0.019896 135.512   <2e-16 ***
## `Groundwater Threats` 0.003374   0.000377   8.948   <2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.6713 on 1571 degrees of freedom
## Multiple R-squared:  0.0485, Adjusted R-squared:  0.04789 
## F-statistic: 80.07 on 1 and 1571 DF,  p-value: < 2.2e-16

## 
## Call:
## lm(formula = log(Poverty) ~ `Haz. Waste`, data = bayarea_Poverty__tract)
## 
## Residuals:
##      Min       1Q   Median       3Q      Max 
## -2.78135 -0.46379  0.02721  0.49529  1.70676 
## 
## Coefficients:
##              Estimate Std. Error t value Pr(>|t|)    
## (Intercept)  2.760480   0.019150 144.154   <2e-16 ***
## `Haz. Waste` 0.033657   0.009486   3.548    4e-04 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.6855 on 1571 degrees of freedom
## Multiple R-squared:  0.007949,   Adjusted R-squared:  0.007317 
## F-statistic: 12.59 on 1 and 1571 DF,  p-value: 0.0003998

## 
## Call:
## lm(formula = log(Poverty) ~ `Solid Waste`, data = bayarea_Poverty__tract)
## 
## Residuals:
##      Min       1Q   Median       3Q      Max 
## -2.77988 -0.45871  0.02217  0.49372  1.62537 
## 
## Coefficients:
##               Estimate Std. Error t value Pr(>|t|)    
## (Intercept)   2.756652   0.018436 149.524  < 2e-16 ***
## `Solid Waste` 0.023232   0.004633   5.014 5.94e-07 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.6828 on 1571 degrees of freedom
## Multiple R-squared:  0.01575,    Adjusted R-squared:  0.01512 
## F-statistic: 25.14 on 1 and 1571 DF,  p-value: 5.937e-07